Polygrammodes cyamon is a moth in the family Crambidae. It was described by Herbert Druce in 1899. It is found in Oaxaca, Mexico.[1]
The forewings are reddish brown, crossed about the middle by a darker brown band from the costal to the inner margin, which is edged with a narrow yellow line. There is an elongate white spot at the end of the cell. The hindwings are white, but the apex, outer margin and fringe are reddish brown.[2]